KR
知識表示
Kr 符號
Kr
n 1: a colorless element that is one of the six inert gasses;
occurs in trace amounts in air [syn: krypton, atomic
number 36]
2: a communist organization formed in Cambodia in 1970; became
a terrorist organization in 1975 when it captured Phnom
Penh and created a government that killed an estimated
three million people; was defeated by Vietnamese troops
but remained active until 1999 [syn: Khmer Rouge, Party
of Democratic Kampuchea, Communist Party of Kampuchea]